1.

if P (A)= P(B).show that A= B

Answer»

Every set is a member of power set so that, A ∈ P(A) Given that P (A) = P (B) So that A ∈ P(B) A is a element of power set of B so that, A ⊂ B ... (1) Similarly we can prove that B ⊂ A ... (2) From equation (1) and (2) we get, A = B



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